To summarize, BLDC motors utilize a permanent magnet rotor and wound stator poles, and as such are “electrically” commutated (as opposed to mechanical or “brushed” commutation). EC MotorsĮlectrically commutated motors (ECMs, EC, or ECM motors) are simply a specific version of the popular brushless DC motor it may, therefore, be useful to review this exciting new technology by reading our article all about brushless DC motors. First, we will start with a brief look at each motor type, and then a comparison will follow which will show the advantages of one motor over another.
Both of these motors come in small sizes and provide cheap, reliable power, but this article will differentiate these two devices so that designers know which one is right for their job. This article helps to alleviate some of this confusion by comparing two motors– the older Permanent Split Capacitor (PSC) motor and the newer Electrically Commutated (EC) motor.
These advancements now provide many different AC and DC motor options to choose from, which can be daunting to the uninitiated buyer. Modern electric motors are smaller – and yet more powerful – than ever before.ĭesigners can convert electrical current to mechanical energy at sizes never thought possible, thanks to the electronics of the 20th and 21st centuries.